and since C = O2+is a hard base and Ca2+is a hard acid, C = O2+and Ca2+can be tightly bound, with S moving toward W and combining into new bonds, thus forming an intermediate acid based on the W electronic structure. Li et al[48]explored the potential of Cu-K-Co/AC fordesulfu...
The introduced Mg 2+ and Al 3+ with strong electron-withdrawing capability weaken the electron density of ether oxygen (EO) chains via chelation in the coordination structure, resulting in a locally limited interaction between the EO chains and the surface of cathodes at high state of charge. ...
Transition state structureQuantum calculationsMechanistic and kinetic aspects, as well as quantum chemical calculations, for the formation of a tetrahydrofurane ring by cyclization of the highly substituted alcohol–2,6-dimethyl-hept-5-en-2-ol with phenylselenohalides (PhSeCl and PhSeBr), in the ...
Figure 2: Influence of the catalyst structure on the reactivity and enantioselectivity. Conditions: aldehyde2a(0.05 mmol), TMSCN3(0.1 mmol) and catalyst1(3 mol%) in Et2O (0.16 M) at –30 °C for 4 days unless noted otherwise. Isolated yields were determined after converting...
structure was confirmed by the single-crystal analysis of its analogs (BHT)2MeAl-O(MeO)C=(Me)CCH2-μBu[P(NIiPr)Ph]2-CH2C(Me)=C(OMe)O-Al(BHT)2Me, by replacingμHex[P(NIiPr)Ph]2withμBu[P(NIiPr)Ph]2(Fig.4, Supplementary Figs.31and32). The single-crystal structure clearly ...
Preparation and structure Controlled hydrolysis of B16H20 forms the new borane B14H18. Deuterolysis of B16H20 generates B14H18-xDx. On the basis of the method of synthesis and the 70.6-MHz 11B NMR and the 33.7-MHz 2H NMR spectra of these compounds, a structure fo... S Hermanek,K ...
Our research was extended to bis[dichloro(η5-pentamethylcyclopentadienyl)rhodium(III)] [Cp*RhCl2]2 1, which has an isoelectronic structure. In the reactions of 1 with MDMPP, we could isolate the (η1-P), (η2-P,OMe) and (η2-P,O) coordinated complexes of (η5-pentamethylcyclopentadi...
The diastereoselectivity of the addition was found to be remarkably sensitive to the structure of the phosphoramide promoter. The results of the uncatalyzed reaction are reiterated to recall a 49/1 selectivity favoring the syn diastereomer. When the reactions are promoted by a catalytic amount of ...
Synthesis and X-ray structure of the MOFs The ligand (SorR)-3,3′-di-tert-butyl-5,5′-dicarboxyphenyl-6,6′-dimethylbiphenyl-2,2′-diylhydrogen phosphate (H3L) was synthesized by a Pd-catalyzed Suzuki cross-coupling between enantiopure 3,3′-di-tert-butyl-5,5′-dibromo-6,6′-dimethyl...
Kappe CO, Shishkin OV, Uray G, Verdino P (2000) X-ray structure, conformational analysis, enantioseparation, and determination of absolute configuration of the mitotic kinesin Eg5 inhibitor Monastrol. Tetrahedron 56:1859–1862 CASGoogle Scholar ...